Steps to delete a personal email account from your BlackBerry Bold 9930
From the home screen, scroll to the All tray, and press the trackpad.
Scroll to Setup, and press the trackpad.
Scroll to Email Accounts, and press the trackpad.
Scroll to the email account you want to remove, and press the Menu key.
Scroll to Delete, and press the trackpad.
To confirm delete, scroll to Yes, and press the trackpad.
You've now removed the email account.